JPS6026827Y2 - High pressure liquid injection nozzle - Google Patents

Description

DETAILED DESCRIPTION OF THE INVENTION The present invention relates to a high-pressure liquid injection nozzle for slurrying powder in a powder storage tank.

A cargo handling device that takes out powder stored in a storage tank in the form of a slurry is equipped with a high-pressure liquid injection nozzle that turns the powder into a slurry.

Typical examples thereof will be summarized with reference to FIGS. 1 and 2. Reference numeral 1 denotes a storage tank in which powder 2 is stored.

An opening 3 is bored in the bottom of the storage tank 1, and a sump 5 having a slurry outlet 4 is attached to the opening.

Further, the opening 3 is provided with a nozzle body 6 that spouts high-pressure liquid toward the powder 2.

As shown in a perspective view in FIG. 2, the nozzle body 6 has a jet lower which is rotatable around both a horizontal axis X and a vertical axis Y.

While rotating around Y, the liquid supplied from the high-pressure liquid port 8 is injected toward the powder 2.

In this device, since the blower protrudes from the nozzle body 6, when the powder is stored in a storage tank for a long period of time, the powder becomes compacted and solidified, and the exposed blower is buried in the solidified powder layer. Even if an attempt is made to rotate the nozzle body 6, the nozzle body 6 ends up in a state where it cannot be rotated easily.

If you try to rotate the nozzle body 6 in this state,
Not only does this require a large amount of driving force, but depending on the situation, there is a risk that the rotating shaft of the injection device or the nozzle body may be damaged.

In an attempt to overcome this drawback, the shape shown in FIG. 3 was next developed.

That is, in FIG. 3, the nozzle body 6 has a cylindrical cover 9 fixed to the nozzle body 6 that covers most of the rotation range of the jet lower, and the cover 9 protects the jet lower. However, in this example as well, although the nozzle protection effect around Y@ is recognized to some extent, the above-mentioned problem has not been solved with respect to rotation around X@.

The present invention attempts to solve the problems mentioned above in the conventional example.
(shaft) Rotating bed high pressure liquid injection device, which is characterized by the fact that the nozzle is covered with a three-part spherical cover.
According to the present invention, the nozzle is completely covered with a spherical cover except for the ejection point, so it is not affected by the solidification of the powder, and when the nozzle rotates around the Y axis during work. The entire spherical cover rotates together with the nozzle, and when the nozzle rotates around the X axis, a part of the spherical cover rotates with the nozzle, so that the nozzle does not lose its rotational function. This means that it can be effective.

Next, an embodiment of the present invention will be described with reference to FIG.

In FIG. 4, the spherical cover includes an upper hemisphere 11 and a lower hemisphere 1.
2. Open from the lateral hemisphere 13.

The lower hemisphere 12 is directly welded to the rotating shaft 14, and rotates around the Y-axis along with the rotation of the shaft 14 (rotation around the Y-axis).

The upper hemisphere 11 is attached to the upper end of the shaft 14 from outside the body with a bolt 15, and the upper hemisphere 11 also rotates together with the shaft 14.

The upper hemisphere 11 and the lower hemisphere 12 contact at the equatorial plane 21, and this)
The two are connected by a fitting structure, forming a spherical body with a small circular opening on the side.

The horizontal hemisphere 13 is a small hemisphere that fits into a small circular opening 16 formed by the upper hemisphere 11 and the lower hemisphere 12, and the cross section of the opening 16 has a stepped shape with the outside protruding inward. The side surface of the horizontal hemisphere 13 has a cross-sectional shape suitable for engagement with this stepped cross section (stepped shape with the inner side protruding outward).

Therefore, the lateral hemisphere 13 rotates the upper hemisphere 11 around the X-axis.
, sliding rotation is possible with respect to the lower hemisphere 12, the lateral hemisphere 13 does not move outward, and powder can be prevented from entering the inside of the spherical cover.

A shaft support body 23 that is integral with the shaft 14 is provided inside the spherical cover, and the rotating shaft 17 is pivotally supported on the shaft support body 23 .

A nozzle 18 is provided protruding from the rotating shaft, and the nozzle 18 includes:
High pressure liquid is supplied through the rotating shaft 17.

Further, a pinion 20 is fixed to the rotating shaft 17, and a rack 19 that meshes with the pinion 20 is provided within the shaft 14.

22 is a small hole bored in the horizontal hemisphere 13, and the nozzle 18 is inserted into the small hole 22.

The shaft 14 is rotated around the Y-axis by an electric motor (not shown) as in the conventional example.

Therefore, the injection device including the spherical cover and the nozzle 18 also works together with the shaft 14 while spouting high-pressure liquid from the nozzle 18.
Rotate around an axis.

Further, by reciprocating the rack 19 by a reciprocating mechanism (not shown) as in the conventional example, the rotating shaft 17 is
It causes reciprocating rotation around the X axis.

At this time, the nozzle 18 also rotates back and forth around the X-axis, but since the tip of the nozzle 18 protrudes into the small hole 22,
When the nozzle 18 rotates around the X-axis, the horizontal hemisphere 13 also rotates around the X-axis along the circumferential surface of the small circular opening 16 along with the nozzle 18 .

In this way, even though the spherical cover completely covers the nozzle 18 except for its ejection point (corresponding to the small hole 22), the nozzle 18 rotates around the X and Y axes. When the spherical cover moves or rotates, part or all of the spherical cover rotates or rotates together with the nozzle 18, so there is no problem with the rotation of the nozzle 18 around the two axes, and the liquid is jetted from the nozzle 18. It will be done smoothly.

As described above, according to the present invention, when assembling a spherical cover to cover a nozzle, etc., the outer surface of the spherical cover is
Since there are no protrusions such as a nozzle, the nozzle can be easily rotated in any direction even within the compacted and solidified powder bed.

Therefore, the driving force required to rotate the nozzle is small, and the amount of powder that enters the spherical cover is very small, so there is little wear on the bearings, etc.

Further, since the spherical cover is divided into three parts, it can be easily disassembled, and each part within the spherical cover can be easily maintained and inspected.

[Brief explanation of drawings]

FIG. 1 shows an example of a conventional device for slurryizing powder in a powder storage tank, and FIG. 2.3 shows an example of an injection nozzle used in the device. FIG. 4 shows the injection nozzle of the present invention, and is a sectional side view thereof. 11... Upper hemisphere, 12... Lower hemisphere, 1
3... Horizontal hemisphere, 14... Axis, 16...
...Small circular opening, 17...Rotation axis, 1
8...Spout, 19...Rack, 20.
...Zenion, 22...Small hole, 23...
...Axle support.

Claims (1)

[Scope of utility model registration request] A spherical body consisting of an upper hemisphere and a lower hemisphere is configured to rotate together with a vertical axis, and a small circular opening is provided in the side surface of the spherical body, and a lateral side that forms a spherical cover together with the two hemispheres is provided in the opening. The hemispheres are rotatably fitted together, the horizontal hemisphere is configured to be rotatable together with a horizontal rotation axis, and a rotary high-pressure liquid injection device including a nozzle is built into the spherical cover, and the nozzle is installed in the spherical cover. A high-pressure liquid injection nozzle for turning powder into slurry is installed at the bottom opening of the powder storage tank, which is characterized by being inserted into a small hole drilled in a horizontal hemisphere.